import { asyncRoutes, constantRoutes } from '@/router'

import { getTabelList } from '@/api/formConfig/index'

import Layout from '@/layout'

/**
 * Use meta.role to determine if the current user has permission
 * @param roles
 * @param route
 */
function hasPermission(roles, route) {
  if (route.meta && route.meta.roles) {
    return roles.some(role => route.meta.roles.includes(role))
  } else {
    return true
  }
}

/**
 * Filter asynchronous routing tables by recursion
 * @param routes asyncRoutes
 * @param roles
 */
export function filterAsyncRoutes(routes, roles) {
  const res = []

  routes.forEach(route => {
    const tmp = { ...route }
    if (hasPermission(roles, tmp)) {
      if (tmp.children) {
        tmp.children = filterAsyncRoutes(tmp.children, roles)
      }
      res.push(tmp)
    }
  })

  return res
}

const state = {
  routes: [],
  addRoutes: []
}

const mutations = {
  SET_ROUTES: (state, routes) => {
    state.addRoutes = routes
    state.routes = constantRoutes.concat(routes)
  }
}

const actions = {
  generateRoutes({ commit }, roles) {
    return new Promise(resolve => {
      let accessedRoutes
      // 系统管理员拥有所有权限
      if (roles.includes('superAdmin')) {
        accessedRoutes = asyncRoutes || []
      } else {
        accessedRoutes = filterAsyncRoutes(asyncRoutes, roles)
      }
      // 后台获取
      getTabelList()
        .then(resp => {
          const contents = resp.data.content
          const formRoutes = {
            path: '/dynamicForm',
            name: 'DYNAMIC_FORM',
            component: Layout,
            meta: { title: '动态表单信息' },
            children: []
          }
          contents.forEach(next => {
            formRoutes.children.push({
              path: '/dynamicForm/' + next.sceneCode,
              name: 'DYNAMIC_FORM_' + next.sceneCode,
              component: () => import('@/views/dynamicForm/scene'),
              meta: { title: next.scene, code: next.sceneCode }
            })
          })
          accessedRoutes.unshift(formRoutes)
          commit('SET_ROUTES', accessedRoutes)
          resolve(accessedRoutes)
        })
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}
